/Engine/Source/Runtime/Core/Public/Experimental/Graph/GraphConvert.h
Represents a mapping between two graphs where each vertex in a source graph maps to exactly one vertex in a target graph. The mapping is not bidirectionally one-to-one. The length of Mapping is the number of vertices in the source graph and each value is a vertex in the target graph. e.g. a mapping from the vertices in a cyclic graph to the vertices in its condensation graph.
struct FMappingManyToOne
TArray<FVertex...
Mapping